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Commit 0174b381 authored by Sasha Levin's avatar Sasha Levin Committed by Doug Ledford
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IB/ucma: check workqueue allocation before usage 



Allocating a workqueue might fail, which wasn't checked so far and would
lead to NULL ptr derefs when an attempt to use it was made.

Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent b3b51f9f

drivers/infiniband/core/ucma.c

+6 −1
Original line number Diff line number Diff line
@@ -1624,11 +1624,16 @@ static int ucma_open(struct inode *inode, struct file *filp) 
	if (!file)

		return -ENOMEM;



	file->close_wq = create_singlethread_workqueue("ucma_close_id");

	if (!file->close_wq) {

		kfree(file);

		return -ENOMEM;

	}



	INIT_LIST_HEAD(&file->event_list);

	INIT_LIST_HEAD(&file->ctx_list);

	init_waitqueue_head(&file->poll_wait);

	mutex_init(&file->mut);

	file->close_wq = create_singlethread_workqueue("ucma_close_id");



	filp->private_data = file;

	file->filp = filp;